P202A

Reductant Tank Heater Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Increased fuel consumption
SCR System Error Message
Heating of the urea tank does not work

Causes

Broken wiring in the heating circuit
Heating control relay malfunction
Failure of the heating element
Problems with the SCR control unit
Short circuit in the circuit

How to Fix

Check the integrity of wiring and connections
Check the functionality of the heating relay
Test the heating element for resistance
Check the fuses of the corresponding circuit
Scan the SCR control unit for additional errors

Related codes

P202B P202C P20EE